how can I fix my AR-M201 copier?

My ARM201 copier just stopped printing has an error code H4.00 on the screen. I have pressed the c and auto button twice nothing happened. Pls help!
lucy, July 2016


done
Why? YOU could have helped!

Spending about 45 seconds with Google gets me to this:

http://www.fixya.com/support/t9728823-fix_error_code

XXX, July 2016